Any [creative] activity in any form is great. I.e. a sport, a craft, art, music... find something that he's interested in doing (he may not want to do it for long to start with, but there'll be something). Try and encourage progress within that over time. Build it up, get him involved in it more and hopefully things should settle down slightly and enough to introduce doing the same activity in a social (a group specifically for children with learning difficulties) setting. Obviously it will not be a quick process. Can I ask how old he is?